/**
  * Set settings html.
  *
  * @return string
  */
 public function getSettingsHtml()
 {
     // Get parent settings
     $settings = parent::getSettingsHtml();
     // Get available fields
     $fields = array();
     foreach (craft()->fields->getAllFields() as $field) {
         $fields[$field->handle] = $field->name;
     }
     // Add "field" select template
     $fieldSelectTemplate = craft()->templates->render('reverserelations/_settings', array('fields' => $fields, 'settings' => $this->getSettings()));
     // Return both
     return $settings . $fieldSelectTemplate;
 }